<!DOCTYPE html>
<html lang="en">

<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>LearnVue</title>
	<!-- <script src="./lib/Vue-2.4.0.js"></script> -->
	<style>
		* {
			margin: 0;
			padding: 0;
		}

		.box1 {
			height: 100px;
			width: 20%;
			background-color: green;
			float: left;
			text-align: center;
			line-height: 100px;
		}

		.box2 {
			height: 100px;
			width: 20%;
			background-color: green;
			float: left;
			text-align: center;
			line-height: 100px;
		}

		.box3 {
			height: 100px;
			width: 20%;
			background-color: green;
			float: left;
			text-align: center;
			line-height: 100px;
		}

		.box4 {
			height: 100px;
			width: 20%;
			background-color: green;
			float: left;
			text-align: center;
			line-height: 100px;
		}
		.box5 {
			height: 100px;
			width: 20%;
			background-color: green;
			float: left;
			text-align: center;
			line-height: 100px;
		}
		.box6 {
			height: 100px;
			width: 60%;
			background-color: yellow;
			float: left;
			text-align: center;
			line-height: 100px;
		}
		.box7 {
			height: 200px;
			width: 40%;
			background-color: yellowgreen;
			float: right;
			text-align: center;
			line-height: 200px;
		}
		.box8 {
			height: 150px;
			width: 30%;
			background-color: gray;
			float: left;
			text-align: center;
			line-height: 150px;
		}
		.box9 {
			height: 150px;
			width: 30%;
			background-color: black;
			float: left;
			text-align: center;
			line-height: 150px;
		}
		.box10 {
			height: 150px;
			width: 40%;
			background-color: #00FFFF;
			float: right;
			text-align: center;
			line-height: 150px;
		}
		.box11 {
			height: 100px;
			width: 60%;
			background-color: red;
			float: left;
			text-align: center;
			line-height: 100px;
		}
		.box12 {
			height: 100px;
			width: 100%;
			background-color: #0000FF;
			float: left;
			text-align: center;
			line-height: 100px;
		}
	</style>
</head>

<body>
	<div class="box1">1</div>
	<div class="box2">2</div>
	<div class="box3">3</div>
	<div class="box4">4</div>
	<div class="box5">5</div>
	<div class="box6">6</div>
	<div class="box7">7</div>
	<div class="box8">8</div>
	<div class="box9">9</div>
	<div class="box10">10</div>
	<div class="box11">11</div>
	<div class="box12">12</div>

</body>

</html>